KR102636633B1 - 헌팅턴 유전자 억제를 유도하는 RNAi - Google Patents
헌팅턴 유전자 억제를 유도하는 RNAi Download PDFInfo
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Abstract
Description
(A) CAG 확장(검정) 및 miH1-H21(밝은 회색)에 대한 타겟 서열을 갖는 인간 HTT 유전자(L27350.1)의 모식도이다.
(B) HTT 유전자의 엑손1 RNA 서열(서열 번호 2)이다. CAG 반복 서열은 nts 367-429이다.
(C) 엑손 1에서 시험된 타겟 서열의 모식도이다(H1, 185 내지 205, H2, 186 내지 206, H3, 189 내지 209, H4, 191 내지 211, H5, 194 내지 214, H6, 196 내지 216; H7, 250 내지 270, H8, 261 내지 281, H9, 310 내지 330, H10, 311 내지 331, H11, 339 내지 359, H12, 345 내지 365, H13, 454 내지 474, H14, 459 내지 479; H15, 477 내지 497, H16, 486 내지 506, H17, 492 내지 512, H18, 498 내지 518, H19, 549 내지 569, H20, 557 내지 577, H21, 558 내지 578, H1 내지 H21은 서열번호 23 내지 43에 상응한다). 도시된 서열은 DNA 서열이다. 숫자는 서열번호 2의 대응되는 RNA 뉴클레오타이드 서열을 나타낸다. 서열번호 2의 대응되는 RNA 타겟 서열은 RNA가 "U"를 암호화하는 "T"를 암호화하는 것을 제외하고는 C)에 열거 된 서열을 갖는다.
도 2는 이중 가닥 RNA 및 발현 카세트의 예이다.
(A) miH12 pre-miH12-155에 대한 pri-/pre-miRNA 스캐폴드(서열 번호 44) 및 miH12 가이드 (회색)가 표시된 프리 miH12-451 스캐폴드(서열 번호 45)의 예이다.
(B) 본 발명에 따른 이중 가닥 RNA 및 RNAi 장치(RNAi machinery)에 의해 어떻게 가공될 수 있는지의 개략적 모식도이다. 이중 가닥 RNA는 짧은 헤어핀 RNA(1) 또는 확장된 siRNA(2) 일 수 있다. 헤어핀 RNA 또는 확장된 siRNA는 나타난 바(1 및 꺾쇠(bracket))와 같이 가까운쪽(proximal) 말단에 제 1 RNA 서열을 가지고 있다. 짧은 헤어핀 RNA 또는 연장된 siRNA는 세포 내에서 siRNA를 생성하기 위한 RNAi 기작에 의한 것(3) 일 수 있으며, 또한 본 발명에 따른 이중 가닥 RNA 일 수 있고, 그 중 제 1 RNA 서열을 포함하는 하나의 가닥은 RISC 복합체로 합쳐질 수 있다(4). 이중 가닥 RNA는 pri-miRNA 서열 (5) 또는 pre-miRNA 서열 (6)에 포함될 수 있다. pri-miRNA는 RNAi 기작에 의해 처리 되어 pre-miRNA를 생성하고, 그 후 제 1 RNA 서열을 포함하는 한 가닥이 RISC 복합체에 통합 될 수 있는 성숙한 miRNA 듀플렉스(duplex)를 생성할 수 있다(7). pre-miRNA, pri-miRNA 및 miRNA 듀플렉스에서 제 1 RNA 서열의 위치는 1과 꺾쇠로 표시된다.
(C) pVD-CMV-miH12-155 발현 카세트의 DNA 서열(CMV 프로모터 (1 내지 588), 개입 서열(intervening sequence), GFP (Green Fluorescent Protein) 서열 (713 내지 32), 5' pri-miRNA 인접(flank) (1433 내지 1514), 5' pre-miRNA, guide strand ( 제 1 RNA 서열) (1520 내지 1540), 루프 서열, passenger strand(second RNA sequence) (1560 내지 1578), 3' pre-miRNA) 3' pri-miRNA 인접 (1584 내지 1704), HSV TKpolyA signal (1705 내지 1976);
(D) pVD-CAG-miH 12-451의 DNA 서열 (CAG 프로모터 (43 내지 1715), 5' pri-miRNA 인접 (1716 내지 2017), 5' pre-miRNA, guide strand ( 제 1 RNA 서열) (2034 내지2054), 제 2 RNA 서열 및 3' pre- miRNA, 3' pri-miRNA 인접(2090 내지 2320), hGH polyA signal (2321 내지 2417) 및
(E) pVD-PGK-miH12-451 발현 카세트의 DNA 서열 (PGK promoter (23 내지 277), 5' pri-miRNA 인접 (278 내지 794), 5' pre-miRNA, guide strand ( 제 1 RNA 서열) (811 내지 831), 제 2 RNA 서열 및 3' pre- miRNA, 3' pri-miRNA 인접(867 내지 1097), hGH polyA signal (1098 내지 1194).
(F) pVD-CMV-miH12-155에 의해 암호화된 pri-miH12-155 서열.
(G) pVD-CAG-miH12-451에 의해 암호화된 pri-miH12-451 서열.
(H) pVD-PGK-miH12-451에 의해 암호화된 pri-miH12-451 서열.
그림 (E), (F), (G) 및 (H)의 글꼴 유형은 해당 DNA에 대해 위에서 사용된 것과 동일하다. 프로모터 서열은 굵은 글씨, GFP 서열은 밑줄 그어진 이탤릭 (C 한정), pri-miRNA 서열은 일반적인 글꼴, guide strand(제 1 RNA 서열)은 굵은 이탤릭체, passenger strand 또는 제 2 RNA 서열은 이탤릭체 pre-miRNA 서열은 밑줄이 그어져 있고 polyA 신호는 굵게 밑줄이 그어져있다.
도 3은 miH1-21의 인비트로(in vitro)상에서 넉다운 (knockdown) 효율을 나타낸다.
(A) 타겟 엑손 1에 의한 전체 HTT 넉다운. LucHTT는 Hek293T 세포에 miH1-miH21과 함께 형질감염(co-transfect)시켰다. 바다 팬지(Renilla)와 반딧불이(Firefly) 루시퍼레이즈(luciferase) 형광은 형질감염 후 48 시간째에 측정되었다. miScr (대조군)을 음성 대조군으로 사용하고 100 %로 기준했다. miH12는 가장 높은 넉다운 효율을 나타냈다.
(B) 19 내지 23 뉴클레오타이드 길이의 합성 siH12 에 의한 LucHTT를 넉다운한 것 이다.
도 4는 다른 프로모터를 가진 miH12-451의 인비트로상에서 넉다운 효율을 나타낸다.
(A) LucHTT 리포터는 CAG-miH12 또는 PGK-miH12 변체(variant)에 함께 형질감염되었고, 위의 도 3과 같이 넉다운 효율을 측정했다.
(B) CAG 또는 PGK 프로모터로부터 발현된 miH12-451*의 passenger (*) strand 활성은 특정 LucHTT * 리포터로 측정되었다 . passenger strand의 활성은 감지되지 않았다
도 5는 AAV5-전달 miH12(AAV5-delivered miH12)의 생체 내(in vivo) 효능을 나타낸다.
(A) 실험 세팅. 마우스에 AAV5-Luc73QHTT 및 AAV5-CMV-miScr-155 또는 AAV5-CMV-miH12-155를 1:5의 비율로 함께 주입(co-inject)하였다. 측정 시점은 화살표로 나타냈다;
(B) 마우스에서 6 주간의 AAV5-Luc73QHTT 넉다운을 MS로 측정했다;
(C) AAV5-miH12에 의한 6주째까지의 AAV5-Luc73QHTT 넉다운 경향
도 6은 랫트 HD 기전 모델에서의 인간 HTT 넉다운 개념을 입증한 것이다.
(A) 실험 세팅
(B) 뇌 조직학적 결과는 AAV5-CMV-miH12-155 그룹에서 신경퇴행(DARP32)이 덜한 것 및 돌연변이 된 Htt(EM48) 응집체가 덜한 것을 나타낸다
(C) 뇌 조직의 GFP 결과
(D) 뇌 조직의 Iba1 면역 활성화 마커 결과.
도 7은 인간화 된 Hu97 / 18 HD 마우스 모델에서 인간 HTT 넉다운 결과이다.
(A) AAV5 - CMV - miH12-155의 줄무늬체 내(intrastriatal)에 느리게 주입, 대류 강화 확산 (convection enhanced diffusion ; CED) 줄무늬체 내 주사 또는 뇌실 내(intracerebral ventricular ; ICV) 주사에 따른 쥐(murine) 뇌에서의 전달 효율. GFP 형광은 주입 5 주 후에 관찰되었다.
(B) AAV5 - miHTT 전달에 따른 쥐 뇌에서 인간 HTT 넉다운을 측정한 웨스턴 블롯 결과.
(C) HTT 웨스턴 블롯의 정량화.
도 8은 선택된 H12 타겟과 선행 타겟 서열의 비교이다. LucHTT는 표시된 siRNA (A) 및 miRNA 컨스트럭트 (B 및 C)로 Hek293T 세포에 공동 형질감염시켰다. 바다 팬지와 반딧불이 루시퍼레이즈 형광은 형질감염 48 시간 후에 측정되었다. miH12와 siH12는 가장 강력한 넉다운 효율을 보였다.
| 서열번호 | 제 1 RNA 서열 | 길이 |
| 3 4 5 6 7 |
5'-AAGGACUUGAGGGACUCGA-3' 5'-AAGGACUUGAGGGACUCGAA-3' 5'-AAGGACUUGAGGGACUCGAAG-3' 5'-AAGGACUUGAGGGACUCGAAGG-3' 5'-AAGGACUUGAGGGACUCGAAGGC-3' |
19 20 21 22 23 |
| 서열번호 | 제 2 RNA 서열 | 길이 |
| 8 9 10 11 12 13 14 |
5'-UCGAGUCCCUCAAGUCCUU-3' 5'-UUCGAGUCCCUCAAGUCCUU-3' 5'-CUUCGAGUCCCUCAAGUCCUU-3' 5'-CCUUCGAGUCCCUCAAGUCCUU-3' 5'-GCCUUCGAGUCCCUCAAGUCCUU-3' 5'-CUUCGAGUCUCAAGUCCUU-3' 5'-ACGAGUCCCUCAAGUCCUC-3' |
19 20 21 22 23 19 19 |
| 서열번호 | 이름 | 서열 |
| 15 | pre-miR451a | 5'-CUUGGGAAUGGCAAGGAAGGACUUGAGGGACUCG AAGACGAGUCCCUCAAGUCCUCUCUUGCUAUACCCAGA-3' |
| 16 | pre-miR155 | 5'-UGCUGAAGGACUUGAGGGACUCGAAGGUUUUGGCCA CUGACUGACCUUCGAGUCUCAAGUCCUUCAGGA-3' |
| 타겟 | 타겟 서열 | SI. | L. | Id. |
| H12 | 5'-CUUCGAGUCCCUCAAGUCCUU-3' | 34 | 21 | 21 |
| H11 | 5'-GAAGGCCUUCGAGUCCCUCAA-3' | 33 | 21 | 15 |
| R1(siHUNT-2) | 5'-GGCCUCGAGUCCCUCAAGUCC-3' | 46 | 21 | 18 |
| R2(shD2) | 5'-GGCCUUCGAGUCCCUCAAGUC----3' | 47 | 21 | 18 |
| R3(siRNA-DExon1) | 5'-AGGCCUUCGAGUCCCUCAAGU-3' | 48 | 21 | 17 |
| R4(HDAS 07) | 5'-AUGAAGGCCUUCGAGUCCCUC-3' | 49 | 21 | 13 |
| R6.1 (54) R6.2 (55) |
5'-GCCUUCGAGUCCCUCAAGU-3' 5'-CCUUCGAGUCCCUCAAGU-3' |
50 51 |
19 18 |
17 17 |
Claims (17)
- 제 1 RNA 서열 및 제 2 RNA 서열을 포함하는 이중 가닥(double stranded) RNA로,
여기서 제 1 및 제 2 RNA 서열은 실질적으로 상보적이고,
여기서 제 1 RNA 서열은 적어도 19 개 뉴클레오타이드의 서열 길이를 가지며, 서열 번호 1에 상보적이고,
여기서 제1 RNA 서열은 서열 번호 3, 서열 번호 4, 서열 번호 5, 서열 번호 6, 및 서열 번호 7로 이루어진 그룹으로부터 선택되며, 여기서 상기 이중 가닥 RNA는 헌팅턴 유전자 발현을 감소시킬 수 있는 것인, 이중 가닥 RNA.
- 제 1 항에 있어서, 상기 이중 가닥 RNA는 pre-miRNA 스캐폴드(scaffold), pri-miRNA 스캐폴드, shRNA 또는 siRNA에 포함되는 것인, 이중 가닥 RNA.
- 제 1 항에 있어서, 상기 제 1 RNA 서열은 20 개 이상의 뉴클레오타이드의 서열 길이를 갖는 것인, 이중 가닥 RNA.
- 제 1 항에 있어서, 상기 제 1 RNA 서열은 21 개 이상의 뉴클레오타이드의 서열 길이를 갖는 것인, 이중 가닥 RNA.
- 제 1 항에 있어서, 상기 제 1 가닥 및 제 2 가닥은 서열 번호 3 및 8; 서열 번호 4 및 9; 서열 번호 5 및 10; 서열 번호 5 및 13; 서열 번호 5 및 14; 서열 번호 6 및 11; 및 서열 번호 7 및 12의 조합으로 구성된 군으로부터 선택된 하나인, 이중 가닥 RNA.
- 제 1 항에 있어서, 상기 이중 가닥 RNA는 miR-451a 또는 miR-155로부터 유래된 pre-miRNA 스캐폴드에 포함되는 것인, 이중 가닥 RNA.
- 제 1 항에 따른 이중 가닥 RNA를 암호화(coding)하는, 핵산.
- 제 1 항에 따른 이중 가닥 RNA를 암호화하는, 발현 카세트(cassette).
- 제 8 항에 있어서, 상기 발현 카세트는 PGK 프로모터, CMV 프로모터, 신경 특이적 프로모터 또는 CBA 프로모터를 포함하는 것인, 발현 카세트.
- 제 8 항에 따른 발현 카세트를 포함하는, 유전자 치료(gene therapy)용 벡터.
- 제 10 항에 있어서, 상기 유전자 치료용 벡터는 AAV 벡터인 것인, 유전자 치료 벡터.
- 제 7 항에 따른 핵산 또는 제 8 항에 따른 발현 카세트를 포함하는, 숙주 세포.
- 제 1 항에 따른 이중 가닥 RNA, 제 7 항에 따른 핵산, 제 8 항에 따른 발현 카세트 또는 제 10 항에 따른 유전자 치료용 벡터를 포함하는 헌팅턴 병 치료용 약학적 조성물.
- 삭제
- 제11항에 있어서, 상기 유전자 치료용 벡터는 혈청형(serotype) 5의 AAV 벡터인 것인, 유전자 치료용 벡터
- 삭제
- 삭제
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